<div class="viewerContainer">
  <div class="viewerContentContainer">
    <video [src]="videoUri" class="videoStyle" autoplay="true" controls="controls"></video>
  </div>
  <div class="viewerOperationContainer">
      <button class="btn btn-danger" (click)="onCloseViwer()">关 闭</button>
  </div>
</div>